Dangerous Heat in the Central and Eastern U.S.; Critical Fire Weather in the Great Basin and Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue Tuesday across portions of the Four Corners and Great Basin, as dry conditions and gusty winds persist. Read More >

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Partly Cloudy

72°F

22°C

Humidity	82%
Wind Speed	SW 6 mph
Barometer	30.12 in (1019.7 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	29 Jun 9:56 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Islip Terrace NY

Extreme Heat Watch July 1, 12:00pm until July 4, 09:00pm

Click here for hazard details and duration

Extreme Heat Watch

Tonight
Low: 66 °F
Partly Cloudy
then Patchy
Fog
Tuesday
High: 83 °F
Patchy Fog
then Mostly
Sunny
Tuesday Night
Low: 70 °F
Slight Chance
T-storms
Wednesday
High: 89 °F
Mostly Sunny
Wednesday Night
Low: 73 °F
Slight Chance
T-storms
Thursday
High: 95 °F
Sunny
Thursday Night
Low: 76 °F
Clear
Friday
High: 97 °F
Sunny
Friday Night
Low: 75 °F
Partly Cloudy

Detailed Forecast

Tonight

Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 66. South wind around 5 mph becoming calm in the evening.

Tuesday

Patchy fog before 7am. Otherwise, mostly sunny, with a high near 83. Light southwest wind becoming south 10 to 15 mph in the morning.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 11pm. Partly cloudy, with a low around 70. Southwest wind 9 to 18 mph, with gusts as high as 28 mph.

Wednesday

Mostly sunny, with a high near 89. Southwest wind 10 to 17 mph.

Wednesday Night

A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Southwest wind 9 to 14 mph.

Thursday

Sunny, with a high near 95.

Thursday Night

Clear, with a low around 76.

Friday

Sunny, with a high near 97.

Friday Night

Partly cloudy, with a low around 75.